Calculating-machine.



D. E. FELT. GALCULATING MACHINE. Arr'uornou Hum JUL! 12. 19u.

1,066,096.A Patented July 1, 1913.

9 BIBBTHBEBT 1.

D. E. FELT. OALGULATING MAGHINE.` PPLIoA'rIon FILED JUL; 12, 1912.

Patented July 1,1913.

9 SHEETS-SHEET 2.

D. E. FELT.

GALGULATING MACHINE. A

APPLIoATIoN FILED JULY 12. 1912.

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D. E. FELT.

GALGULATING MACHINE.

Arrmoulou funn JULY 12, 1912.

Patented July 1, 1913 9 SHEETS-SHEET 4.

D. E. FELT.

CALCULATING MACHINE.

APPLIGATION FILED JULY 12, 1912.

1,066,096. Patented July 1, 1913.

9 SHEETS- SHEET 5.

D. E. FELT.

CALGULATING MACHINE.

APPLIoATIoN FILED JULY 12, 1912.

1,066,096, Patented July 1, 1913.

9 SHEETS-SHEET 6.

D. E. FELT.

GALGULATING MACHINE.

APPLIoATloN FILED JULY 12,1912.

1,066,096. Patented July 1, 1913.

9 SHEETS-SHEET 7.

fig zz rwefzfar: JJWTE Flt D. E. FELT.

GALCULATING MACHINE.

APPLIoATxoN FILED JULY 12. 1912.

1,066,096. Patented July 1, 1913.

9 SHEETS-SHEET 8.

D. E. FELT.

CALGULATING MACHINE.

APPLICATION FILED JULY 12, 1912.

Patented July 1, 1913.

9 SHEBTB-BHEET 9.

UNTTED sTATEs PATENT oEEIoE.

BORR E. FELT, OF CHICAGO, ILLINOIS.

CALCULATING-MACHIN E.

To all whom it may concern.'

Be it known that I, Donn E. FELT,'a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Calculating-Machines, ,of which the following is a specification.

My invention relates to multiple-order key-driven calculating machines, 4and particularly t such calc ulating machines as the well known comptometers set forth in, among'others, my prior U. S. Patents, Nos. 762,520 and 762,521 of June 29, 1904, 767,107 of August 9, 1904, 960,528 of June 7, 1910, 992,950 of May 23, 1911, 996,009 of June 20, 1911 and 1,028,344 of June 4,' 1912. And the invention has for an object the providing of means whereby a partial and uncompleted key-stroke will cause the locking of not only keys in other orders but also other keys in the same order as the one improperlymanipulated, and fora further object, the providing of improved means for locking the keys in other orders when a key in one order receives only such a partial key-stroke; and for a further object, the providing of means for preventing the complete ret-'urn to normal of the key that has so received only a partial keystroke; and for a further object, the providing of improved means for holding the numeral wheels locked save when the keys are so manipulated as to cause the proper and intended adding movement of said wheels; and for further objects, such other improvements `in construction and function4 vas may be found to obtain 1n the devlces hereinafter set forth or claimed.

To make my invention more clearly understood there are shown in ,the accompanying drawings constructions for carrying it into practical effect, without limiting ,the improvements, in their 'useful applications, -to the particular constructions which, for the purpose of example, have been delineated in the drawings.

In said drawings, Figure 1 is a longitudinal vertical section of a portion of the machine, the remainder of the machine being shown in Fig. 24 and the parts being shown in their position of rest. Fig. 2 is ay like partial longitudinal vertical section showing the parts after theA partial stroke ofy one ofthe keys.

Specification of Letters I Patent.

Application lled July 12, 1912. Serial N o. 708,945.

.similar to Fig. 1, but omitti'n Alock to which it is normally subject.

Fig. 3 shows the locking detent for the accumulator-wheel detached,'

Patented July 1, 1913.

levers 35 and 36 respectively. Fig. 19 is a like elevation of the auxiliary lever 37; Fig. 20 is a partial elevation of one of the column actuators. Fig. 21- is ,a longitudinal vertical lsection of a portion of the machine, some of the parts shown in Fig. 1. Fig. 2 is a det-ail perspective view of the bar for locking the keys, 'and Fig. 23 is a detail of .the stop lever. Fi 25 is a section like Fig. 1, -but showing onFy the parts beyond the division' Iplate 'that covers manyof the working members in Fig. 1, and also omitting the 4stop lever devices that immediately coperate with the coarse-spaced teethjon the rear side of the segment end of the column-actuator.

Fig.v 26 is a similar section, but showing-*1 said division plate and, in relation to it, the bar shown in Fig. 22 and Fig. 1, and some of the parts coperating with said bar. f In the drawing, 20 represents the numeral wheels, each of which is geared in the usual manner to and is actuated by an accumulator-wheel 21 having a pawl and ratchet connection at its side to a pinion 22, which meshes with the teeth of the column actuator 23 and is driven by such actuator when it moves upward after being depressed by the keys. The keys are illustrated at Figs. 12 and 14, and are each made in two parts one of which is movable with respect to the other, the central button 24 being mounted on a spring tube 30 and capable of being depressed, independently of bot-h the stem `26 and side wings 27, but its depression being necessary to relieve the key from the This lock upon the keys is caused by the bars 28, see Figs. 12'and 22, placed alongside of each denominational series of keys, and each having nixie" upstanding projections 29 with turned over ends one for each key, so placed that said turned over ends will engage the bottom of. the projection 70eon the stems 26 of the keys when the keys are depressed. The bars 28 are supported by stationarily moved to unlock the keys.

the tension of which springs forces them back to normal position after they have been The lock upon the keys by the bar 28 must of ooursebe relieved by sliding the bars sutliciently to carry Athe projections 29 beyond the keys before the keys can be operated, and this I accom.- plish by the means now to be described. By the use of the keys described in combination with the -key locking bar I am enabled to prevent the interference by the operators fingers with keys adjacent to the ones struck.

Whena key is operated, the key depresses not only the column actuator of the order to which the key belongs, but with the actuator, it also depresses the stop levers 35 and 36 and the auxiliary lever 37 of the same order, the lever 35 acting when the even number keysvare struck and the lever 36 acting when the odd number keys are struck. These levers are shown at Figs. 17, 18 and 19'and are arranged parallel to thel actuator and alsopivoted at the rear of the machine. When any key. is struck properly (that is, on the button top 24 instead of merely a glancing blow on a side\ win 27)-, it first encounters the lever .37, whic is provided with a laterally projecting pin 38, and this pin enters an open horizontal slot 39 in the forward end of thehorizontal arm-40 of an elbow lever 41 pivoted at 42 upon the column actuator.' separated upright members 43 and 44 connected by a flat member 45, the member 43 being in the same p lane with the horizontal member 40 and having a retractin spring 46 attached to its upper end, andl t e mem.

ber 44 being made somewhat higher than member 43 and being pivotally attached to the rear end of a longitudinal connection 47,

see Figs. 2 and 21, so that the elbow lever, when it is rocked by lever 37, imparts a longitudinal movement to connection 47, and by such movements causes the key lock bar 28 to slide out from its locking position. This is due to the contact by the projection 48 on the bar 28 with the laterally located pin 55 at the upturned forward end of the connection 47. This unlocking of the keys takes place of course early in the key stroke so as not t-o interfere withA 0r prevent the making of full and complete strokes.

All the parts of the machine which have a longitudinal movement, derive that motion in one direction at least from the longitudinal connection 47, and hence the location of pivot 42, the slot 39 in the arm 40, andthe pivot uniting the arm 44 to said connection all become of importance 'in the machine.

This elbow' lever has two The duty of lockingthe accumulator so as to control thenumeral wheel during the down-stroke of a .key is devolved upon detent.50 overhanging the accumulator and pivo-ted at 51 on a stationary pivot. The point of the detent is adapted to enter between the pins 52 of the accumulator and lock it at the 'instant any key in the same order with it is struck, holding the wheel locked during tha't part of the up-and-down key-stroke in which the proper adding movement of the numeral-wheel is not occurring. The detent is controlled by means of its inner end which is forked as shown at 150 in-Fig. 3 and connected with controlling mechanism to be described laterv on. The detent. is withdrawn from its locking position only upon the conclusion of full stro-kes by the keys and during the rising movement of the column actuators following such full strokes, and of course remainsin the locking position when the keys are only partially operated. In the forked end 150 ofthe detent 50, is entered the pin 53,'carried in lthe forward end of a lever 54. This lever 54 swings on a centrally located axis consisting of the before-mentioned pin 55, supported by swinging hangers 56 secured to alsta'tionary rod or wire 57. Saidlever 54 is also provided with an upstanding armV 58 fromlwhich a springv 59 vextends to and' is .fastened to; a pin 60 located in the stople'ver 68-469, Fig.

Fig. 3, terminates in a foot, l61 .'whichis adapted to contact with and befliftedvbyithe/ column actuator 23" when thelatter returns to normal Aposition after beingoperated by a key, and above suchifoot, the lever' is also surface which in case of a partial key-stroke drops into position for engagementwitha swinging hangers 64, Fig. 21, said hangers andbar 63 being normally 'impelled .forwardly by springs 83, Fig. 3, and limited in their backward and forward movements by the recess 164 in the hangers G4 engaged by rod 264. Y

I have already explained the sliding of the key locking bar 28 from its locking position atthe beginning of the key-stroke, the operation so far as such movement is concerned, being the sa'me whether the stroke ginning of a key-stroke the auxiliary lever 37 is. at once depressed, and so causes a complete movement of the longitudinal connection 47,'and sgiconnection 47 is retracted by the springt@ .on any partial stroke of thekey after itsforward movement. The axis 55 alreadymentioned issec'ured 'in the forward end of connection 47 and shifts its position with each movement of the latter,

and consequently the lever 54 already de- 23. Beyond the axis', the lever 54, see

provided with a projection 161 'havingla j 'transverse square bar 63, supported 1nlll is a full one or is only partial. At the bescribed moves forward and back with connection 47, its forward end entering the forked end of the detent 50. At the conclusion of the downstrokes one of the key stop levers 35 or 36 will have been depressed with Vthe column actuator and the auxiliary lever 37, and said lever, 35 is provided with an upward projection and lever 36 with an upward projection 66 and these projections 65 and 66 are adapted to enga e the levers 90 and 91 pivoted at 92, said evers carrying lateral projections 93 and 94 adapted to enga e the lever 454 between the axis 55 and the orward end of the lever, on their downward movement, and consequently oneA or the' other of such projections depending upon the key struck whether it isfan even or an odd number will depress said lever and rock it on its axis, and in so doing the upstanding arm 67 on lever 54 will be carried forward suvfiiciently to allow the swinging stop 68, which is normally clear of the arm 67 as shown, to drop behind the arm. In assuming this position the detent 50 is swung on its pivot in a direction which carries its locking end entirely out of the accumulator wheel, leaving the latter entirely free to be rotated by the column actuator in rising to its normal position, and the detent remains locked in this position until the stop 68 is forced up from behind arm 67,

by the rising of the column actuator which engages and lifts an arm 69, which is in one piece with the stop and projects forwardly from the pivot. The detent 50 then resumes its normal position relative to the accumulator and the lever 54 also returns to normal under power of the spring 59 as shown.

' The depression of lever 5,4 by the projections 93 or 94 becomes fully complete simultaneously with the completion of the key st-roke, so that the release of the accumulator cannot take place until that time. Where a key is depressed only partially, as indicated in Fig. 2, the locking bar 28 is first moved from its locking position by the means already described, but the key is detained in a partially lowered position by reason of the engagement of the projection 70 on the key stem under the turned over end of the corresponding projection 29 on the bar 28. This detention of the key enables the operator usually to know at a glance whichv of the keys is the offending one, and he then proceeds to correct the error by completing the stroke of that key, and When'this has been done and the key has returned to normal, it becomes locked with the rest of the machine and itthen becomes necessary be-.

tially operated, the connection 47 will be operated because the key lock bar 28 is moved from its locking position when the -keys receive either partialjor full strokes, and with the connection 47 the lever 54 receives a lon- `gfitudinal movement toward the front. The lever 54 when the actuator is up, has its projection 161 in a position above the bar 63 and when the actuatoris depressed, support is withdrawn from the foot 61 and the projection 161 rests on the bar 63 until pushed forwardly by the movement of connection 47, whereupon the projection 161 thereof will fall to a position on a level with the bar 63 due to the action of the spring 59 on the lever 54 about the pivot 55. Levers 62 have front hooked ends which normally are upheld by the cross bar 63, as shown inFi l and 21. Upon a partial depression o anykey neither projection 93 nor 94, of levers 90 and 91 respectively, contacts lever 54 to depress the. forward end thereof as previously described for a complete depression, hence the column actuator does not return to its normal position upon release ofA the key but the auxiliary lever 37 rises slightly, whereupon the levers 44 and 43-are retracted by the spring 46, and at the same time connection 47 moves rearwardly, thereby taking lever 54 along with it. The projection l61`of the lever 54 bein now on a level with square bar 63, upon eing retracted, will engage bar 63 and move the same rearwardly. When bar '63 is moved in this manner, 'the support for the hooked hooked ends engage the forward side of the square .bar 63 and hold it retracted, see Fig. 2. The levers 62 support a shaft 74, and a series ofwhook holders 75, one in each order, are mounted on a shaft 76 and have lips 77 resting on shaft 74. Said holders each supporta hook 78 adapted to swing vunder the upstanding hook 79 on the column actuator, when left free to yield to'a spring 80, which constant-ly tends to swing it into engagement with each actuator hook. When the vlevers 62 fall to the position of Fig. 2 the shaft 74 falls so as to relieve the pressure on the lips 77 on saidshaft, and thus allow the springs 80 of all the orders to swing the hooks 78 into enga ement with the actuators. I thus lock al of the actuators in the machine except that of any order containing the partially depressed key, and all the keys of said order containing the partially depressed key are at the same time rendered incapable of 'operating by the engagement of the rn -ejections 70 on their stems with the projectls 29 on the bars 28. The actuator of the order oontainin the offending key will become locked in tiie same manner as the actuators of the other orders immediately on the completion of the stroke by the offending key, but the other orders are ends of levers 62 is withdrawn and said ends of levers^62 are lifted as described in the following statement. When'it .is desired to release the keys from the lock upon their actuators, the operator presses downwardon the key 8l. This key bears upon the cross bar 82 connecting the levers 62 upon the opposite sides of the machine, and thereby lifts the hooked ends of said levers to normal position, freeing the hooks 78 from the actuators and causing a renewal of the pressure by the lips 77 on shaft 74. The pins 84 in the auxiliary levers act as stops to the backward movement of the members 43 of the elbow levers 41.

I claim 1. The combination in a multiple-order key-driven calculating machine, of a columnactuator, a denominational series of keys, a bar arranged along the series and acting normally to lockthem, and means for moving said bar when one of the series is struck to carry the bar out from locking position, yembracmg me bers mounted on and tensioned to the c lumn-actuator and connected to the locking bar and actuated from the struck key.

2. The combination in a multiple-order key-driven calculating machine, of a columnactuator, a denominational series of keys, a bar arranged along the `series and adapted normally to engage each of them, and members mounted on and tensioned to the column-actuator and receiving power from said keys when struck, and acting to cause the bar to move out from locking position.

3. The combination in a multiple-order key-driven calculating machine, of a columnactuator, a denominationalseries of keys, a bar arranged along the series and adapted to normally lock them, and an elbow lever mounted on the column actuator and acting when any key is struck to cause the release of the keys from the lock of said bar.

4. The combination in .a multiple-order key-drivenl calculating machine,`of a columnactuator, a denominational series of keys, a

sliding bar arranged along the series and` adapted to normally lock them, and means including an elbow lever mounted on the column actuator and'receiving power from any key which may be Vstruck and acting to cause the bar to sllde from-its locking posi- Ition.

5. The combination in a multiple-order key-driven calculating machine, of a denominational series of keys, a sliding bar arranged along the series and having projections adapted to normally lock the keys individually, and means including an elbow lever receiving power from any of said keys when struck, and connections from the lever to said bar adapted to cause the sliding of the bar from its locking position. I

6. The combination in a multiple-order key-driven y calculating machine, of a columnactuator, a denominational series of keys, a sliding bar arranged along the series and adapted normally lock them, an elbow lever pivoted on the column actuator, an auxiliary lever actuated by the keys, and itself actuatinfr said elbow lever, and connections from tthe elbow lever to said sliding bar acting to slide the bar from its locking position.

7. The combination in a multiple-order key-driven calculating machine, of a columnactuator, a denominational series of keys, a sliding bar arranged Aalong the series and adapted to normally lock them, an elbow lever pivoted on the column actuator, the actuating connections between the elbow lever and the locking bar, and means for actuating said elbow lever and causin it to impart a sliding movement to said ar.

8. The combination in a multiple-order key-driven calculating machine of a denominational series of keys, a sliding bar arranged along the series' and adapted to normally lock them, the auxiliary lever, and connections between said lever and said locking bar, whereby the depression of said lever `under a key stroke causes a sliding movement of the lock-ing bar.

9. The combination in a multiple-order key-driven calculating machine, of a numeral wheel, the keys driving the same, a detent causing the locking of said wheel throughout a partial key-stroke, mechanism controlled by said keys and connected to che detent and acting only when any of the keys makes'a full adding stroke, to move the detent positively and thereby release the numeral wheel.

10. The combination in a multiple-order key-driven calculating machine, of a numeral wheel, its accumulator, the keys driving the same, a pivoted detent overhanging the accumulator and'acting to lock the latter throughout a partial key-stroke, and mechanism joined to the free end of the detent and acting on the completion of a full down stroke by any of said keys to depress said free end and thereby lift the detent out of the accumulator. l

11. The combination in a multiple-order key-driven calculating machine of al numeral wheel` the keys, a detent pivoted between its ends, one end of the detent causing the locking of said wheel throughout a partial key-stroke, and theother end being free and -servin as a means ofpo-sitionmg the locking en ,l and mechanism controlled by .the keys and oined to said f'ree end, and acting Whenany of said keys makes a full stroke to swing the detent and release the wheel.

l2. The combinationin a multiple-order key-driven calculating machine of a numeral wheel, the keys, a detent pivoted between its ends, one end of the detent causing the locking of said wheel throughout a partial key-stroke, and the other .end being free and serving as a ,means of-.positioning the locking end, and mechanism cont-rolled by the keys and joined to said free end, and acting when any of said keys makes a full stroke to depress said free end of the detent and cause the locking end to release its locking action.

13. The combination in a multiple-order key-driven calculating-machine with the numeral wheels and the keys, of means for `locking the numeral wheels, and means for locking all the other keys when a partial stroke of a key is made.

14. 'The combination in a multiple-order key-driven calculating machine with the numeral wheels and the keys, of means for preventing improper manipulation of the keys, means forv locking the numeral Wheels throughout a partial key-stroke and releasable only during full adding 'strokes of the Y keys, and means for lockingall the other keys when a key isonly partially o rated.

15. The combination in a multip e-order. key-driven calculating machine with the numeral Vwheelspandfthe keys, of^meansvfor locking the 'keys adapted to be released when any key -is properly struck, means for locking the numeral wheels throughout a partial key-stroke and adapted to be -released only when a key has been `given a com-plete stroke, and means locking al1 the other keysV VWhen a key has received only a partial stroke.

,16.y Ina multiple-order key-driven calculating machine, in combination: the addingmechanism; the multipleseries of keys driving. said ,adding mechanism; and locking mechanism adapted to lock other orders of the keys when a key of one order receives only a partial key-stroke, and also to lock other keys of the same order; substantially as specified. l Y 17. In a multiple-'order key-driven calculating machine, in combination: the addingmechanism; the multiple series of keys driving said adding-mechanism; and mechanism adapted to prevent the complete return to normal of a key that receives onl a partial key-stroke; substantiall as speci ed.

18. In a multiple-or er key-driven calculating machine, in combination: the adding mechanism; the multiple series of keys driving said adding-mechanism; locking mechanism adapted to lock other orders of the keys when a key of one order receives only a partial key-stroke; and mechanism adapted to prevent the complete return to normal of a key that receives only a (partial keyfie lating machine, in combination: the addingmechanism, including' column actuators vin the Vseveral orders; the multiple series of keys drivin said adding-mechanism; and locking mee anism adapted to lock other orders of the keys when a key of one order receives only a partial key-stroke, said locking mechanism including in each order an actuating-device whose actuation augments the actuation of the column actuator in tha order; substantially as specified.

21. In a multiple-order key-driven calculating machine, in combination: the addingthe several orders; the multi le series of keys driviV `said adding-mec anism; and locking mee anism adapted to lock other orders of the keys when a key of one order receives only a partial key-stroke, said locking mechanism including in each order an actuating-device whose actuation augments the actuation of the column actuator in that order, said actuating-device being .a depressible lever having a lifting tension member mounted on the column-actuator; substantially as specified.A

22, In a multiple-order key-driven calculating machine, in combination: the addingmechanism, including column-actuators 1n the several orders; the multiple series of keys driving said adding-mechanism; and locking mechanism adapted to lock other orders when a key of one order receives only a partial key-stroke, said locking mechanism being provided with a vtrip-device auxiliary to the column-actuator depressed and having a ard-device to prevent the trip-action durmg'a proper `adding move` mechanism,y including column actuators in ion partial key-stroke, and. also to lock other` keys of the same order, the first-named locking being eiected through a trip-device that may operate independently of the devices effecting the locking of the other keys of the same order; substantially as specified.

24. In a multiple-order key-driven calculating machine, in combination: the adding mechanism, including carrying devices adapted to permit said adding-mechanism to receive prime actuations in a plurality of orders simultaneously; the multiple series of keys driving said adding-mechanism; and locking mechanism adapted to lock other orders of the keys when a key of one order receives only a partial key-stroke, and also to lock other keys of the same order, substantially as specified.

25. In a multiple-order key-driven calculating machine` in combination; the addingmechanism, including` carrying devices adapted to permit said adding-mechanism to receive prime actuations in a plurality of orders simultaneously; the multiple series of keys drivingr said adding-mechanism; and mechanism adapted to prevent the complete return to normal of a key that receives only a partial key-stroke; said preventive mechanism being operable in a plurality of orders simultaneously but its release in one order e'ecting a locking of that order until other misoperated orders are released; substantially as specified.

26. In a multiple-order key-driven calculating machine, in combination: the addingmechanism, including carrying devices adapted to permit said adding-mechanism to receive prime actuations in a plurality of orders simultaneously: the multiple series of keys driving said adding-mechanism; locking mechanism adapted to lock other orders of the keys when a key of one order receives only a partial key-stroke; and mechanism adapted to prevent the complete return to normal of a key that receives only a partial key-stroke; the locking being operable in each of a plurality of orders simultaneously and releasable upon complete manipulation of a key in each order Where keys have been so simultaneously misoperated; substantially as specified. Y

27. In a multiple-order key-driven calculating machine, in combination: the adding mechanism, including carrying devices adapted to permit said adding-mechanism to receive prime actuations in a plurality of orders simultaneously; the multiple series of keys driving said addingmechanism; locking mechanism adapted t-o lock other orders of the keys when a key of one order receives only a partial key-stroke, and also to lock other keys of the same order; and mechanism adapted to prevent the complete return to normal of a key that receives only a partial key-stroke; the locking` being opcrable in eacl of a plurality of orders simultaneously and releasable upon complete manipulation of a key in each order Where keys have been so simultaneously misoperated, substantially as specified.

28. In a multiple-order key-driven calculating machine, in combination: the addingmechanism, including carrying devices adapted to permit said adding-mechanism to receive prime actuations in a plurality of orders simultaneously; the multiple series of keys driving said adding-mechanism; and locking mechanism adapted to lock other -orders when a key of one order receives only a partial key-stroke, and also to lock other keys of the same order, the first-named locking being effected thro-ugh a trip-device that may operate independently of the devices effecting the locking of the other keys of the same order; the locking being operable in each of a plurality of orders simultaneously and releasable upon complete manipulation of a key in each order where keys have been so simultaneousiy misoperated: substantially as specified.

29. ln a multiple-order key-driven calculating machine. in combination: the addingmcchanism, including numeral Wheels, prime-actuators therefor, and carrying devices adapted to permit said adding-mechanism to receive prime actuations in a plurality of orders simultaneously; the multiple series of keys driving said adding-mechanism; locking mechanism causing the locking of the numeral Wheels throughout a partial key-stroke; and mechanism controlled by said keys and connected to said numeral-wheel locking mechanism and acting positively and only when any 0f the keys makes a proper adding stroke, to positively restore said locking mechanism to normal and thereby release the corresponding numeral Wheel; said numeral-wheel locking mechanism being operable in a plurality of orders simultaneously and permitting simultaneous operation of numeral Wheels in other orders; substantially as specified.

30. In a multiple-order key-driven calculating machine, in combination: the addingmechanism, including numeral Wheels, prime-actuators therefor, and carrying devices adapted to permit said adding-mechanism to receive prime actuations in a plurality of orders simultaneously; the multiple series of keysrdriving said adding-mechanism; stop-mechanism normally engaging said Wheels but released during movement of the prime-actuators; and 4locking mechanism put in action to lock the numeral Wheel as soon as a key is struck but released at the conclusion of a proper down-stroke of the key; said numeral-wheel locking mechanism being operable in a plurality of orders simultaneously and permitting simultaneous operation of numeral wheels in other orders; substantially as specified.

3l. In a multiple-order key-driven calculating machine, in combination: the addingmechanism including numeral wheels, column actuators therefor, and carrying devices adapted to permit said adding-mechanism to receive prime-actuations in a plurality of orders simultaneously; the multiple series of keys driving said adding-mechanism; and locking mechanism adapted to lock other orders when a key-in one order receives only a partial key-stroke, said locking mechanism including the auxiliary levers movable relatively to the column-actuators, and the locking action taking effect at the initial part of the return movement of the so manipulated key; the locking being operable in each of a plurality of yorders simultaneously and releasable u on complete manipulation of a key in eac order where ke s have been so simultaneously misoperat substantially as specied.

32. In a multiple-order kkey-driven calculating machine, in combination: the addingmechanism; the multiple series of keys driving said adding-mechanism; and locking mechanism adapted to lock other keys in the same order when a key receives only a partial key-stroke, said locking means remaining inactive until the partially depressed key is permitted to rise toward normal; substantially as specified.

33. In a multiple-order key-driven calculating machine, in combination: the addingmecha-nism; the multiple series of keys driving said adding-mechanism; locking mechanism adapted to lock other keys in the same order when a key receives only a partial key-stroke, said locking means remaining inactive until the partially depressed key is permitted to rise toward normal; and mechanism adapted to prevent the complete return to normal of the key that has been so misoperated; substantially as specified.

34. In a multiple-order key-driven calculating machine, in combination: the addingmechanism; the multiple series of keys driving said adding-mechanism; locking mechanism adapted to lock other keys in the same order when a key receives only a partial keystroke, said locking means remaining inactive until the partially depressed key is permitted to rise toward normal; locking mechanism for locking all the keys when the operation of the partially depressed key. is complete; and releasing means for releasing said locking mechanism; substantially as specified.

35. In a key-driven calculating machine, in combination: driven accumulator mecha nism; finger-keys whose manipulation provides the power for driving said accumulator mechanism, said keys being individually in two parts, one adapted to be struck and moved before the other is; and resilient devices adapted to cushion the initial movement of the first-moved of said key-parts and also to augment the driving action of the later-moved of said key-parts; substantially as specified.

36. In a key-driven machine, in combination: driven mechanism; finger-keys whose manipulation provides the power for driving said mechanism, said keys being individually in two parts, one adapted to be struck and moved before the other is; and resilient devices adapted to cushion the initial movement of the first-moved of said key-parts and also to augment the driving action of the later-moved of said key-parts; substantially as specified.

37. In a multiple-order key-driven calculating machine, in combination: the adding'-` mechanism,

including carrying devices adapted to permit said adding-mechanism to receive prime actuations in a plurality of orders` simultaneously; the multiple series of keys driving said a ding-mechanism; locking mechanism adapted to lock other keys in the same` order when a key receives only a partial key-stroke, said locking means remaining inactive 'until the partially depressed key is permitted to rise toward normal; the locking being operable in Yeach of a plurality of orders simultaneously and releasable upon complete manipulation of a key in each order where keys have been so simultaneously misoperated; substantially as specified.

38. In a multiple-order key-driven calculating machine, in combination: the adding mechanism, including carrying devices adapted' to permit said adding-mechanism to receive prime actuations in a plurality of orders simultaneously; the multiple series of keys driving said adding-mechanism; locking mechanism adapted to lock other keys in the same order when a key receives only a partial key-stroke, said locking means remaining inactive until the partially depressed key is permitted to rise toward normal; and mechanism adapted to prevent the com lete return to normal of the key that has een so misoperated; the locking being operable in each of a plurality of orders simultaneously and releasable upon complete manipulation of a key in each order where keys have been so simultaneously misoperated; substantially as specified.

39. In a multiple-order key-driven calculating machine, in combination: the'addi-ngmechanism7 including carrying devices adapted to permit said adding-mechanism to receive prime actuations in a plurality of orders simultaneously; the multiple series of keys driving said adding-mechanism; locking mechanism adapted to lock other keys in the saine order when a key receives only a partial key-stroke, said locking means remainlng inactive until the partiall depressed key is permitted to rise towar normal; locking mechanism for lookin@r fall the keys when the operation of the partlally depressed key is complete; and releasing means for releasing said locking mechanism; the locking being operable in each of a plurality of orders simultaneously and releasable upon complete manipulation of a key 10 in each order where keys have been so simul- PHILIP E. KUNTZ, WILBUR KUN'rz. 

